- Location: The Adyar River is an important river of Tamil Nadu, flowing through the Chennai region.
- Origin: It originates from the Chembarambakkam Lake.
- Course: The river flows through parts of Chennai and its surrounding areas before draining into the Bay of Bengal.
- Estuary: The Adyar forms an estuarine ecosystem near its mouth before entering the Bay of Bengal.
- Urban significance: It passes through a densely urbanised area of Chennai and is therefore important in the context of urban flooding and storm-water management.
- Environmental significance: The river and its associated wetlands and estuarine areas support aquatic and wetland biodiversity.
- Pollution concerns: Encroachment, untreated sewage, solid waste and other forms of urban pollution have affected the river ecosystem.
- Flood-management relevance: Maintaining the river’s natural flow and drainage channels is important for reducing urban flood risk in Chennai.
UPSC Prelims Practice Question
Q. With reference to the Adyar River, consider the following statements:
- It is located in Tamil Nadu.
- It originates from Chembarambakkam Lake.
- It drains into the Bay of Bengal.
- It is associated with the Chennai urban region.
Which of the statements given above is/are correct?
A. 1 and 2 only
B. 1, 2 and 3 only
C. 2, 3 and 4 only
D. 1, 2, 3 and 4
Answer: D. 1, 2, 3 and 4
